Improvement in devices for connecting car-axles with axle-boxes



T. PRITCHARD. Devices for Connecting Car-Axles with Axle-Boxes.

Patented June 24,1873..

FIGHI FIG.2

ikzesses AM PHDTU-LIIHDGRAHI IC (:0 N. (USBORNE S PRUCESSJ Y UNITED STATES PATENT QFFIGE.

THOMAS PRITGHARD, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO-THIRDS HIS RIGHT TO JOHN LOUGHLIN AND CHARLES DARRAGH,

OF SAME PLACE.

IMPROVEMENT IN DEVICES FOR CONNECTING CAR-AXLES WITH AXLE-BOXES.

Specification forming part of Letters Patent No. 140,303, dated J une 24, 1873; application filed May 10, 1873.

To all whom it may concern:

Be it known that I, THOMAS Pmronnnn, of the city of Philadelphia and State of Pennsylvania, have invented an Improvement in the Connection of (Jar-Axles with their Boxes, of hich the following is a specification:

My invention consists in the combination of screw-bolts or shafts with the journalboxes and with attachable conical bearings in the outer faces of the hubs ot' the wheels, the bearings being lubricated direct from the boxes through the center bores of the bolts, as hereinafter fully described.

Figure 1 is a vertical section of the truckframe A, axle B, and parts in connection herewith. Fig. 2 is a side elevation of a portion of the truck-frame and parts attached. Figs. 3 and 4 are a side and edge views of one of the steel bearings F.

Like letters in all the figures indicate the same parts.

A is the truckframe having pedestals provided with boxes 0 (J. B is an axle having wheels E. The axle instead of having journals is connected with the boxes 0 (J by means of the screw-bolts D D, which fit in threads cut in the front and rear sides of the boxes. The ends of the bolts are conical, as

by the bolts D and the opening 0 in the top,

for the filling of the boxes with oil, closed by means of the plug d. The conical ends of the bolts have a short slit, 0, at one side to admit of a free passage of the oil to the hearing from the central bore b. The bolts are provided with jam-nuts f, which are prevented turning by means of the hinged lockplate H, as seen clearly in Fig. 2.

The steps F may be dispensed with by forming the bearings in the ends of the axle D. Yet the use of steel-bearings is preferable.

The pedestals are prevented spreading apart by means of the longitudinal bars I I and stay-rods J J.

I claim as my invention- 1. In combination with the journal-boxes of railroad cars and the hubs of the wheels, the adjustable screw-bolts D, and conical bearings F, substantially as and for the purpose set forth.

The bolts D having the central bore 1) and an outward extension, b, in combination with the oil-chamber G and conical step F, substantially in the manner and for the purpose above described.

THOMAS PRITUHARD.

\Vitnesses STEPHEN USTIOK, THOMAS J. BEWLEY. 

